diff --git a/[refs] b/[refs]
index 16b1eaa7f7fd..bb36e19b3a2c 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: cef43bf6b3afd819f7cdcba356af0e8220fb3789
+refs/heads/master: 169ad16bb87c10a3f7c108bb7008ebc0270f617a
diff --git a/trunk/arch/x86/xen/enlighten.c b/trunk/arch/x86/xen/enlighten.c
index 04ec69e4d02e..53afa14eb314 100644
--- a/trunk/arch/x86/xen/enlighten.c
+++ b/trunk/arch/x86/xen/enlighten.c
@@ -822,7 +822,7 @@ static void xen_alloc_ptpage(struct mm_struct *mm, u32 pfn, unsigned level)
 		SetPagePinned(page);
 
 		if (!PageHighMem(page)) {
-			make_lowmem_page_readonly(__va(PFN_PHYS(pfn)));
+			make_lowmem_page_readonly(__va(PFN_PHYS((unsigned long)pfn)));
 			if (level == PT_PTE)
 				pin_pagetable_pfn(MMUEXT_PIN_L1_TABLE, pfn);
 		} else